2071647 has 12 divisors (see below), whose sum is σ = 3005184. Its totient is φ = 1375200.

The previous prime is 2071631. The next prime is 2071649. The reversal of 2071647 is 7461702.

It is not a de Polignac number, because 2071647 - 2⁴ = 2071631 is a prime.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 2071647.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2071649) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3147 + ... + 3747.

It is an arithmetic number, because the mean of its divisors is an integer number (250432).

2^2071647 is an apocalyptic number.

2071647 is a deficient number, since it is larger than the sum of its proper divisors (933537).

2071647 is a wasteful number, since it uses less digits than its factorization.

2071647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 990 (or 987 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 2071647 is about 1439.3217152534. The cubic root of 2071647 is about 127.4789815411.

The spelling of 2071647 in words is "two million, seventy-one thousand, six hundred forty-seven".